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Finding the Fourth Proportional to 693,132.08, 956,488.07 and 387,147.56

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Solution

The fourth proportional to 693,132.08, 956,488.07 and 387,147.56 is: 534,244.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,132.08 : 956,488.07 = 387,147.56 : x
  2. Step 2: Convert to fraction form
    693,132.08/956,488.07 = 387,147.56/x
  3. Step 3: Cross multiply
    693,132.08x = 956,488.07 × 387,147.56
  4. Step 4: Simplify right side
    693,132.08x = 370,302,018,655.04
  5. Step 5: Solve for x
    x = 370,302,018,655.04/693,132.08
  6. Step 6: Final answer
    x = 534,244.53

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.